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motikmotik
3 years ago
7

X²+4x+20=0

Mathematics
1 answer:
andrezito [222]3 years ago
7 0

Step-by-step explanation:

The general form of the quadratic equation is :

ax^2+bx+c

The given equation is x²+4x+20=0

On comparing the given equation and the general equation, we find that

a = 1, b = 4 and c = 20

Hence, the correct option is a=1 b =4 c = 20.

If the equation is 2x²+6x+5=0, then

a = 2, b = 6 and c = 5

If the equation is -2x²+x+5

a = -2, b = 1 and c = 5

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If a and b are the zeros of the quadratic polynomial 4x2+4x+1, find the value of a/b+b/a?
kow [346]

Answer:

2

Step-by-step explanation:

First you need to factor your quadratic equation. You'll get (2x+1)(2x+1). Your two zeroes will be -1/2 and -1/2 with one being a, the other b. So then

a/b = (-1/2)/(-1/2)

and

b/a = (-1/2)/(-1/2)

Both reduce to 1. So a/b + b/a is 1+1=2

7 0
3 years ago
Care numere inmultite dau 3 si adunate 1 sa fie aceleasi numere.
nevsk [136]
Care uno dece 3 /1 todas esto make 3
if that help 
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4 years ago
The perimeter of the rectangular room is 96 feet. If the length is 6 feet more than the width, find the dimensions of the room.
n200080 [17]

Answer:

27ft by 21ft

Step-by-step explanation:

In this particular question, we are made to know that the length is 6ft longer than the width.

This mathematically means that if the length is Xft, the width would be (x-6)ft

Since the shape is a rectangle, we know that P = 2(L + B )

Applying this to the measurements we have,

2( x + x - 6) = 96

4x - 12 = 96

4x = 12 + 96

4x = 108

x = 108/4 = 27

Since x = length = 27

width = x - 6 = 27 - 6 = 21

Hence, the dimension of the rectangular room is 27ft by 21ft

5 0
4 years ago
If x =3, y = -2 and z = 6, find the value of 7xyz
muminat

Answer:sin

(

330

)

 

csc

(

60

)

cos

(

390)

Step-by-step explanation:

7 0
3 years ago
I need help with this
cluponka [151]
3. Is 4 2. Is x hoped this helped
5 0
3 years ago
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